Miata, MX-3, MX-6, Protege, 323, 626 & 929
- Connect Diagnostic Tester (49 B019 9A0) to diagnostic connector and select SELF-TEST mode, or connect jumper wire between diagnostic connector terminals TEN and GND. See Figure . Connect tachometer to diagnostic connector terminal IG (-).
- If idle speed is not within specification, rotate idle air adjusting screw on throttle body. See IDLE SPEED SPECIFICATIONS table. Disconnect jumper wire.